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Finding the Fourth Proportional to 526,235.94, 726,149.61 and 311,385.06

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Solution

The fourth proportional to 526,235.94, 726,149.61 and 311,385.06 is: 429,678.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,235.94 : 726,149.61 = 311,385.06 : x
  2. Step 2: Convert to fraction form
    526,235.94/726,149.61 = 311,385.06/x
  3. Step 3: Cross multiply
    526,235.94x = 726,149.61 × 311,385.06
  4. Step 4: Simplify right side
    526,235.94x = 226,112,139,878.83
  5. Step 5: Solve for x
    x = 226,112,139,878.83/526,235.94
  6. Step 6: Final answer
    x = 429,678.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.